With reference to Quantum Dots, consider the following statements:1.These are nanocrystals that exhibit unique optical and electronic properties due to their small size and quantum confinement effects.2.Quantum dots are employed in quantum dot displays (QLED or QD-LED) as a technology for improving the color and efficiency of liquid crystal displays (LCDs) and OLED displays.3.Quantum dots can be used to create a perpetual motion machine.How many of the above statements are correct?

Q. With reference to Quantum Dots, consider the following statements:
1.These are nanocrystals that exhibit unique optical and electronic properties due to their small size and quantum confinement effects.
2.Quantum dots are employed in quantum dot displays (QLED or QD-LED) as a technology for improving the color and efficiency of liquid crystal displays (LCDs) and OLED displays.
.Quantum dots can be used to create a perpetual motion machine..
How many of the above statements are correct?:

[A] Only one

[B] Only two

[C] All three

[D] None

Answer: B

Notes:

Explanation –

Statements 1 and 2 are correct. Quantum Dots are nanocrystals that exhibit unique optical and electronic properties due to their small size and quantum confinement effects. Quantum dots are employed in quantum dot displays (QLED or QD-LED) as a technology for improving the color and efficiency of liquid crystal displays (LCDs) and OLED displays.

Statement 3 is incorrect. Quantum dots cannot be used to create a perpetual motion machine.

Source: ForumIAS

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